Mortgage rejection due to spray foam
We remove the foam, document the timbers with photos and moisture readings, and provide a lender-ready summary. Most clients get a revised valuation within two weeks of the strip-out.
Loft, roof and cavity foam stripped without wrecking your plasterboard
Open cell spray foam removal in London done clean, fast and code-correct
Open cell spray foam removal in London is what we do every week across Greater London, from Victorian terraces in Islington to 1930s semis in Bromley. If a surveyor, lender or buyer has flagged the foam in your loft, we take it out, clean the timbers and leave the roof breathing again. Most lofts are cleared in a single day, with dust contained and waste taken away.
Careful work. Honest options.
About this service
What open cell spray foam removal in London involves
Open cell spray foam removal in London means cutting out the soft, spongy polyurethane foam that was sprayed onto roof rafters or loft ceilings, then cleaning the timber back to a sound, breathable surface. Unlike closed cell spray foam, open cell foam is lighter and more porous, so it traps moisture against the roof deck when ventilation is poor. We use a reciprocating saw and oscillating multi-tool to slice the foam in controlled sections, an industrial vacuum with HEPA filters to capture dust, and a thermal imaging camera to find hidden damp pockets before we close up.
Most of our London call-outs start the same way: a mortgage lender or surveyor has flagged spray foam in the loft, and the sale is stuck. Others call because roof ventilation issues have caused loft condensation, or because hidden damp and rot are spreading behind the foam. If you have been searching for open cell foam removal near me London and want a team that understands Building Regulations Part L and PAS 2035, we handle the strip-out, the disposal and the paperwork you need to move things forward.
- ✓ Mortgage surveys pass
- ✓ Roof timbers dry out
- ✓ Loft space usable again
- ✓ No chemical smell left
What's included
What our open cell spray foam removal includes
Every job is quoted as a complete package, so you are not paying extra for containment, disposal or paperwork. The inclusions below are standard on domestic lofts and roofs. Cavity walls, warehouses and unusual roof structures are priced after survey, and we tell you clearly what is covered before we start.
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Full loft and roof strip-out
We remove open cell foam from rafters, ceiling joists and roof decks across the full pitch, not just the accessible areas near the hatch. Cutting is done with reciprocating saws and oscillating multi-tools to keep timbers intact.
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Dust containment and extraction
Protective sheeting, a negative air machine and HEPA filters keep foam dust out of your living space. We seal the loft hatch and run extraction throughout the job, then clean the containment zone before packing up.
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Timber inspection and moisture readings
After removal we check every accessible timber with a thermal imaging camera and moisture meter. Early rot is treated, and you receive the readings in writing. This is the evidence lenders and surveyors ask for.
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Waste bagging and legal disposal
Foam, adhesive residue and disposable protective equipment are bagged on site and removed the same day by a licensed waste carrier. You get a waste transfer note for your records, which matters if a lender or buyer asks.
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Photo documentation and summary
We photograph the loft before, during and after removal and compile a short written summary. You can forward it directly to your surveyor, lender or buyer without chasing us for extra paperwork.
How it works
How our open cell foam removal process works
01
Survey and quote
We visit, inspect the foam depth and condition, and check roof ventilation. A thermal imaging camera shows any damp pockets behind the foam. You get a fixed written price the same day, usually within two hours of the visit.
02
Containment setup
On the day, we lay protective sheeting over floors and furniture, seal the loft hatch and set up a negative air machine with HEPA filters. This keeps dust out of your living space. Setup takes 45-60 minutes on a typical London terrace.
03
Foam strip-out
Technicians cut the open cell foam into sections using a reciprocating saw and oscillating multi-tool, then pull it away from the rafters. An industrial vacuum captures debris at the blade. A standard 50 square metre loft takes four to six hours.
04
Timber clean and inspection
We sand back adhesive residue, treat any early rot, and re-check moisture levels with the thermal camera. If roof ventilation needs adjusting, we note it for you. This stage usually adds two to three hours to the job.
05
Waste removal and handover
Foam goes into disposal bags and leaves the same day in a licensed van. We sweep the loft, remove all sheeting, and walk you through what was found. You get photos and a summary you can send to your lender or surveyor.
Tools & methods
Tools and methods we use for foam removal
Purpose-built equipment, used by trained technicians — so the job is done accurately the first time.
Reciprocating saw and oscillating multi-tool
Used to cut open cell foam into manageable sections without gouging rafters. The multi-tool reaches into corners and around services where a full saw cannot fit.
Industrial vacuum with HEPA filters
Captures foam dust and debris at the cutting point. HEPA filtration stops fine particles escaping into the loft or living space during the strip-out.
Negative air machine and air scrubber
Maintains negative pressure in the containment zone so dust travels toward the extraction point rather than into your home. Essential on occupied properties.
Thermal imaging camera
Reveals damp pockets, cold bridging and ventilation blockages behind the foam before and after removal. We use it to confirm timbers are drying correctly.
Dry ice blasting machine
Freezes and lifts foam from delicate timbers and lath-and-plaster where saws would cause damage. No water and no grit, so clean-up is straightforward.
Sand blasting equipment
Removes stubborn adhesive residue left after the bulk foam is cut away. We control media and containment to protect brickwork, mortar and surrounding surfaces.
Respirators and protective clothing
Every technician wears fitted respirators, coveralls and gloves. Spray foam chemical hazards are real, and we treat every strip-out as a controlled exposure job.
Real results
Before and after.
Islington loft cleared for mortgage
Before
A 48 square metre Victorian loft in Islington had 120mm of open cell foam sprayed across the rafters. The buyer's lender refused the mortgage, and the surveyor noted damp readings of 28% on several timbers.
After
We stripped the foam in one day, treated two early rot patches and re-checked moisture. Readings dropped to 16% within three weeks. The lender's revised valuation came through, and the sale completed at the agreed price.
Croydon rental lofts dried out
Before
Two rental semis in Croydon had foam across the full roof pitch and persistent tenant condensation complaints. Mould was appearing on stored boxes and the roof felt damp to touch in winter.
After
We removed the foam from both lofts over three days and adjusted the roof vents. The thermal camera showed no cold bridging afterwards. Six months on, there have been no damp complaints and the tenants renewed their leases.
Hampstead heritage roof restored
Before
A large Hampstead property had open cell foam bonded to original rafters and lath-and-plaster. A previous contractor had refused the job, worried about damaging the historic ceiling below.
After
We used dry ice blasting to lift the foam without touching the plaster. The full 70 square metre roof was cleared in two days, adhesive residue was sanded back, and the timbers were left sound and breathable.
Problems we solve
Problems our open cell foam removal solves
Open cell foam causes a narrow set of problems, but each one can stall a sale or damage a roof. Here are the issues we see most often across London and how we fix them.
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Reduced property value and stalled sales
Removing the foam before listing restores the roof to a standard condition. We provide the paperwork buyers and their solicitors ask for, which keeps the sale moving and protects your asking price.
Roof ventilation issues and loft condensation
We strip the foam, clear ventilation paths and check airflow with a thermal imaging camera. Where vents are inadequate, we tell you what needs adjusting so the roof can dry properly.
Hidden damp and rot behind the foam
Our survey uses thermal imaging to find damp pockets before removal. During the strip-out we treat early rot and flag any timber that needs structural attention, so you can plan the repair properly.
Proof you can check
Accredited, insured and accountable
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CHAS AccreditationCHAS
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Constructionline RegistrationConstructionline
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SafeContractor ApprovalSafeContractor
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PAS 2035 Retrofit TrainingRetrofit Academy
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British Board of Agrément (BBA) AwarenessBBA
Most London lofts cost between 1,800 and 4,500 pounds in 2026, depending on foam depth, roof size and access. A standard 50 square metre loft with 100mm of open cell foam sits around 2,400 to 3,200 pounds. Cavity wall or warehouse jobs are quoted separately after a survey. The price includes containment, strip-out, waste disposal and documentation.
Yes. We remove open cell foam from lofts, roof pitches, cavity walls and commercial ceilings across all 32 London boroughs. If the foam is bonded to delicate lath-and-plaster or historic timbers, we switch to dry ice blasting or sand blasting equipment to avoid damage. We survey first, then confirm the safest method for your building.
It is necessary when the foam is trapping moisture, blocking roof ventilation, or has been flagged by a mortgage lender. Left in place, open cell foam can push timber moisture above 25%, which invites rot. If your surveyor has raised it, or you have loft condensation, removal is the reliable fix. We can advise after a free inspection.
A typical London loft takes one working day, usually seven to nine hours from setup to handover. Larger roofs, cavity walls or commercial spaces run two to four days. We confirm the schedule at survey and stick to it, so you can plan around the work and any lender deadlines.
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Book open cell spray foam removal in London today
Call 02080885342 and we will book a survey, usually within 48 hours. Fixed price, CHAS accredited, waste disposed of legally. If a lender deadline is pressing, tell us and we will do our best to bring the job forward.
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Request an appointment
Book your spray foam removal
Call 02080885342 between 8am and 6pm Monday to Friday, or leave a message any time and we will call you back the next morning. Most surveys are booked within 48 hours and quotes go out the same day. Email works too if you have photos of the loft to send over.